As problem of title, I have received the problem report from quality assurance department.

I would like to inform about problem report detail.

  • Problem detail
    Product ; ARTG24LMLC(R000794)
    Problem contents ;
    When installation, wired remote controller did not display. Technician found miss-wiring at indoor unit.

    Photo 1 correct wiring
  • Analysis result.
    <Investigation of manufacture record at factory>
    No record as repair.(Appendix 1)

    <Problem measure in the past>
    there was same problem. For measure, made jig tool and made work process instruction documents.
    However, this jig tool was not easy to use.
    Therefore, this jig tool had not been used by factory worker.

    At the factory, worker is checking by control checker(below photo). however, worker must be confirmed monitor and LED.
    Therefore, there is possibility that worker missed the LED result confirmation result.


    From 10th July 2014, FGL made the work process instruction to make confirmation process clear.
    (first, worker will confirm the monitor result, then, worker will confirm the LED result.)
    However, the product (problem has been occurred at this time) was manufactured before this measure had carried out.
  • Speculation of this problem’s cause.
    <Cause of generation>
    FGL guess that factory worker did not use the jig tool. As the result, worker missed the wiring.

    <Cause of a spillage>
    There is control checker in the FGCA factory. However, this checker need to check monitor and LED.
    Therefore, there is possibility of inspection leakage.
  • Measure
    <For avoiding of this problem generation>
    1. Make new jig tool.

    Previous jig tool(fixed to Work stands) New jig tool(able to confirm the miss-wiring by put on the terminal)


    2. Make usage method clear at work process instruction(from 4th Dec 2014)(Appendix 2)
    3. If worker changes, leader will do the training to new worker by new work process instruction.



     
    Correct direction if direction was wrong, jig tool don’t be fixed


    <For avoiding of this problem spillage>
    1. Interim measures
    Made work process clear at work process instruction.(Appendix 3)
    (First, worker confirms the monitor. Then, worker confirms the LED.)

    2. Permanent measure
    Added the confirmation of wired cable wiring to the heat run check software.(from 23 Jan. 2015)
  •  
    • Measure to product
      Already installed product; ; Measures by each location.
      Stock product; no measures. FGL think this problem will not happen often.
      Manufacture product ; Already measured.